package com.atmilan.quartz.service.impl;

import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;

import com.atmilan.quartz.utils.product.LeamProductUtil;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.atmilan.quartz.constant.Constants;
import com.atmilan.quartz.constant.enums.ProductTypeEnum;
import com.atmilan.quartz.constant.enums.SyncStatusEnum;
import com.atmilan.quartz.model.dto.crmeb.StoreProductCrmebRequest;
import com.atmilan.quartz.model.dto.leam.LeamProductResDTO;
import com.atmilan.quartz.model.entity.crmeb.StoreProduct;
import com.atmilan.quartz.model.entity.crmeb.SystemConfig;
import com.atmilan.quartz.model.entity.leam.LeamProduct;
import com.atmilan.quartz.model.entity.leam.LeamProductSku;
import com.atmilan.quartz.service.ILeamProductService;
import com.atmilan.quartz.service.ILeamProductSkuService;
import com.atmilan.quartz.service.ILeamSyncService;
import com.atmilan.quartz.service.IStoreProductService;
import com.atmilan.quartz.service.ISystemConfigService;
import com.atmilan.quartz.utils.source.SourceLeamProductUtil;
import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;

import lombok.extern.slf4j.Slf4j;

@Slf4j
@Service
public class LeamSyncServiceImpl implements ILeamSyncService {

    @Autowired
    ISystemConfigService systemConfigService;
    @Autowired
    ILeamProductService leamProductService;
    @Autowired
    ILeamProductSkuService leamProductSkuService;
    @Autowired
    IStoreProductService storeProductService;
    @Autowired
    SourceLeamProductUtil sourceLeamProductUtil;
    @Autowired
    LeamProductUtil leamProductUtil;

    @Override
    public Boolean syncLeamProduct() {
        //数据清空
        leamProductService.deleteAll();
        leamProductSkuService.deleteAll();

        int pageNo = 1;
        int pageCount = 1;
        long millis = System.currentTimeMillis();
        while (pageNo <= pageCount) {
            try {
                LeamProductResDTO leamProductResDTO = leamProductUtil.selectLeam();
                if (null == leamProductResDTO || CollectionUtils.isEmpty(leamProductResDTO.getProducts())) {
                    log.info("--------------- leam获取商品接口请求失败,返回商品为空 ---------------");
                    continue;
                }
                //保存商品和sku
                saveGoods(leamProductResDTO);
                log.info("--------------- leam远程抓取数据, 第: {} 页,  总共: {} 页, 总耗时: {} 分  ---------------", pageNo, pageCount, (int) ((System.currentTimeMillis() - millis) / 1000 / 60));
            } catch (Exception e) {
                e.printStackTrace();
            }finally {
                pageNo++;
            }
        }
        return true;
    }

    /**
     * 商品源数据保存
     *
     * @param leamProductResDTO
     */
    private void saveGoods(LeamProductResDTO leamProductResDTO) {
        List<LeamProduct> goodList = new ArrayList<>();
        List<LeamProductSku> skuList = new ArrayList<>();
        leamProductResDTO.getProducts().forEach(good -> {
            if (CollectionUtils.isNotEmpty(good.getAvailableSize())) {
                good.getAvailableSize().stream().forEach(sku -> {
                    LeamProductSku leamProductSku = new LeamProductSku().setProductId(good.getProductId());
                    BeanUtils.copyProperties(sku, leamProductSku);
                    skuList.add(leamProductSku);
                });
            }
            LeamProduct leamProduct = new LeamProduct().setCreatTime(new Date());
            BeanUtils.copyProperties(good, leamProduct);
            goodList.add(leamProduct);
        });
        leamProductService.saveBatch(goodList);
        leamProductSkuService.saveBatch(skuList);
    }

    @Override
    public Boolean pushLeamProduct() {
        try {
            //当次更新少于1千条, 则不更新, 并且重新拉取
            int count = leamProductService.count();
            if(1000 > count){
                systemConfigService.update(Wrappers.<SystemConfig>lambdaUpdate()
                        .eq(SystemConfig :: getName, Constants.LEAM_SYNC_STATUS)
                        .set(SystemConfig :: getFormId, SyncStatusEnum.PUSH)
                        .set(SystemConfig :: getUpdateTime, new Date())
                );
                log.info("--------------- LEAM商品源数据, 少于规定条数, 不进行下发, 总条数为: {} ---------------", count);
                return false;
            }
            //将所有Leam商品更新状态置为未更新
            storeProductService.update(Wrappers.<StoreProduct>lambdaUpdate()
                    .eq(StoreProduct :: getIsEurope, ProductTypeEnum.LEAM.getCode())
                    .set(StoreProduct :: getUpdateFlag, false)
            );

            //商品更新操作
            int pageNo = 1;
            int pageSize = 100;
            int maxPage = (count + pageSize - 1) / pageSize;
            log.info("--------------- 开始分页查询LEAM商品源数据, 本次更新总条数为: {} ---------------", count);
            String imageUrl = leamProductUtil.selectImageUrl();

            long millis = System.currentTimeMillis();
            while (pageNo <= maxPage) {
                try {
                    PageHelper.startPage(pageNo, pageSize);
                    List<LeamProduct> leamProducts = leamProductService.list();
                    PageInfo<LeamProduct> pageInfo = PageInfo.of(leamProducts);
                    List<LeamProduct> products = pageInfo.getList();
                    buildProduct(products,imageUrl);
                } catch (Exception e) {
                    e.printStackTrace();
                }

                log.info("--------------- LEAM下发商品到数据库, 当前页数: {}, 总页数: {}, 耗时: {} 分 ---------------", pageNo, maxPage, (int) ((System.currentTimeMillis() - millis) / 1000 / 60));
                pageNo++;
            }
            // 图搜删除
            storeProductService.delSeachImage(ProductTypeEnum.LEAM);
            // 下架所有未更新数据
            storeProductService.update(Wrappers.<StoreProduct>lambdaUpdate()
                    .eq(StoreProduct::getIsEurope, ProductTypeEnum.LEAM.getCode())
                    .eq(StoreProduct::getUpdateFlag, false)
                    .eq(StoreProduct :: getIsShow, true)
                    .eq(StoreProduct :: getIsDel, false)
                    .set(StoreProduct::getIsShow, false)
                    .set(StoreProduct::getStock, 0)
                    .set(StoreProduct::getLastPushTime, new Date())
                    .set(StoreProduct::getIsTusou, false)
                    );
            // 下架所有sku库存
            storeProductService.downloadSku(ProductTypeEnum.LEAM.getCode());
            
            return true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return false;
    }

    /**
     * 商品构建处理
     * @param products
     */
    private void buildProduct(List<LeamProduct> products,String imageUrl) {
        try {
            for (LeamProduct product : products) {
                //商品没有图片，跳过
                List<String> picList = Stream.of(product.getPic1(), product.getPic2(), product.getPic3(), product.getPic4(), product.getPic5()).collect(Collectors.toList());
                picList.removeIf(StringUtils::isBlank);
                if(CollectionUtils.isEmpty(picList)){
                    log.info("--------------- 该商品: {} 没有图片, 不进行下放 ---------------",product.getProductId());
                    continue;
                }
                if(product.getPrice().compareTo(BigDecimal.ZERO) < 1){
                    log.info("--------------- 该商品: {} 售价异常, 不进行下放 ---------------",product.getProductId());
                    continue;
                }
                List<LeamProductSku> skus = leamProductSkuService.list(Wrappers.<LeamProductSku>lambdaQuery()
                        .eq(LeamProductSku::getProductId, product.getProductId())
                        .isNotNull(LeamProductSku::getSize)
                        .gt(LeamProductSku::getQty, 0)
                );
                if (CollectionUtils.isEmpty(skus)) {
                    continue;
                }
                // 库存计算
                int stock = 0;
                for (LeamProductSku sku : skus) {
                    stock += sku.getQty();
                }

                // 构建实体
                StoreProductCrmebRequest storeProductCrmebRequest = sourceLeamProductUtil.buildLeamProduct(product, skus,imageUrl);
                // 数据保存
                StoreProduct storeProduct = storeProductService.getByBarCode(storeProductCrmebRequest.getBarCode(), storeProductCrmebRequest.getSuppliersId(), storeProductCrmebRequest.getKeyword());
                boolean crmebUpdate = true;
                if (null != storeProduct && null != storeProduct.getLastPushTime()) {
                    long txyye = (System.currentTimeMillis() - storeProduct.getLastPushTime().getTime()) / 1000 / 60;
                    if (60 > txyye) {
                        log.info("--------------- 该商品: {} 上次Leam更新时间: {} 小于一小时, 不进行更新 ---------------", storeProductCrmebRequest.getBarCode(), storeProduct.getLastPushTime());
                        crmebUpdate = false;
                        storeProductService.update(Wrappers.<StoreProduct>lambdaUpdate()
                                .eq(StoreProduct::getId, storeProduct.getId())
                                .set(StoreProduct::getUpdateFlag, true)
                        );
                    }
                }
                if (crmebUpdate) {
                    storeProductService.saveOtProduct(storeProductCrmebRequest, storeProduct, stock);
                }
            }
        }catch (Exception e){
            e.printStackTrace();
        }


    }
}
